You are forgetting one thing. SRT-4 engines are NGC (Next Generation Controller) blocks. The trigger wheels are in a different location and more teeth. Best option to combat this is Megasquirt but last I checked they were still trying to figure out a stable program. Only other thing is to wire in the SRT-4 computer which is damn near impossible without some serious time and skills.
true massive time and tuning but someone has to do it